The fuel filter heater could remain activated even when the ignition is off and lead to a dead battery. The unit could also overheat, possibly leading to a vehicle fire.

Fuel System, Diesel — Pre-Heater

BMW is recalling certain model year 2009 X5 xdrive35D vehicles equipped with a diesel engine and manufactured from October 1, 2008, through June 12, 2009. The fuel filter heater, which is used for warming up the diesel fuel during vehicle operation at low outside temperatures, could experience an electrical overload condition and become permanently activated.

BMW will notify owners, and dealers will replace the fuel filter heater free of charge. The safety recall began on October 11, 2011. Owners may contact BMW customer relations and services at 1-800-525-7417.